AP Statistics Linear Regression and Correlation — practice questions
16 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice AP Statistics Linear Regression and Correlation in the app →In the linear equation y = a + bx, the letter b represents the:In the linear equation y = a + bx, the letter a represents the:The display used to show the relation between two variables x and y is a:The line fitted through a scatter plot by regression is called the line of best fit or the:The difference between an observed y value and the value predicted by the line is called the:In simple linear regression, how many independent variables are used?Points of the fitted line are written with which notation for the predicted value?A residuals plot done correctly should appear:A pattern left in a residuals plot suggests that:Alongside the line itself, the other quantity calculated and interpreted in this analysis is the:A scatter plot of data suited to linear regression should resemble:The scatter plot and the residuals plot are read differently: the scatter plot should look linear while the reThe error term for a single data point is written as the observed y minus the:Least-squares regression earns its name because the fitting rule minimises the sum of the squared:An outlier in a regression analysis shows up in a residuals plot as a point that is:Interpreting the slope b in a fitted line means reading it as the change in y for: